Our Staff - Garrison Animal Hospital - Spring Hill, FL

Garrison Animal Hospital

13170 Spring Hill Dr
Spring Hill, FL 34609



Our Veterinary Staff



Sam Hyka

Practice Manager


Sam is the Practice Manager and has been part of Garrison Animal Hospital team since the summer of 2019. He has been in Florida since 2008. On 1991, he  got the Bachelor degree on Science  and 2008 BSN Degree. Since then, he has been working as Medical/Surgical Registered Nurse in Lower Manhattan, New York and Carrollwood area  in Tampa. Sam enjoys working with everyone and love helping animals. In his spare time he enjoys spending time outside the door and he consider his healthy balance as part of Nature’s balance.

Brandi Dunn


Brandi was born and raised in Florida. Her love for animals started young. She has been in the field for 4 years and she is great member of Garrison Animal Hospital. She enjoys spending time with her family and camping. She has 2 pit bulls and a Frenchie pit mix, that she adores. Brandi will always go out of her way to make sure your fur baby feels loved and comfortable!!

Nicole Oberholtzer


“I share my home with domestic short haired cat, “Blackie” who is 9 years old.”

Nicole obtained her A.A.S in Veterinary Technology in 2013 at Stocken University in New Jersey and she worked as a technician there for 7 years. She loves the fast-paced environment of being a technician and the variety of tasks that must be performed with each patient. She enjoys making a positive difference in the lives of not only the animals but their owners. Outside of work, Nicole enjoys spending time with her family, reading, as well as history sites and traveling around the world. Great to have Nicole as member of Garrison Animal Hospital friendly team.


Brenda Dowis

My name is Brenda Dowis, I have been in the veterinary field for over 14 years. I feel happy working with the friendly team of Garrison Animal Hospital. I love working with all the Fur Babies and helping them. There are always new and exciting things to learn in this field.

Outside of work, Brenda enjoys her family, 6 dogs, 2 cats and about 35 chickens. She also enjoys the beach, the forest, fishing, and hunting. Brenda also helps a locale cat rescue " PAW WARRIORS" as a Veterinary Technician and assist with a Deer Farm in North Florida.

Brenda is also a Breeder of Yorkshire Terriers and Biewer Yorkie Terriers for the past 5 years.